package com.cloud.edu.conf;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.interceptor.KeyGenerator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;

import java.lang.reflect.Method;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

@Configuration
@EnableCaching
public class RedissonAutoConfig extends CachingConfigurerSupport {

	@Autowired
	private RediesProperties properties;

	/**
	 * 生产key的策略
	 * @return
	 */

	@Bean
	@Override
	public KeyGenerator keyGenerator() {
		return new KeyGenerator() {

			@Override
			public Object generate(Object target, Method method,Object... params) {
				StringBuilder sb = new StringBuilder();
				sb.append(target.getClass().getName());
				sb.append(method.getName());
				for (Object obj : params) {
					sb.append(obj.toString());
				}
				return sb.toString();
			}
		};

	}

	/**
	 * 管理缓存
	 *
	 * @param redisTemplate
	 * @return
	 */

	@SuppressWarnings("rawtypes")
	@Bean
	public CacheManager CacheManager(RedisTemplate redisTemplate) {
		RedisCacheManager cacheManager = new RedisCacheManager(redisTemplate);

        //默认超时时间,单位秒
        cacheManager.setDefaultExpiration(3000);
        //根据缓存名称设置超时时间,0为不超时
        Map<String,Long> expires = new ConcurrentHashMap<>();
        cacheManager.setExpires(expires);
		return cacheManager;
	}

	/**
	 * redis 数据库连接池
	 * 
	 * @return
	 */

	@Bean
	public JedisConnectionFactory redisConnectionFactory() {
		JedisConnectionFactory factory = new JedisConnectionFactory();
		factory.setHostName(properties.getHost());
		factory.setPort(properties.getPort());
		factory.setPassword(properties.getPassword());
		factory.setTimeout(properties.getTimeout()); // 设置连接超时时间
		return factory;
	}

	/**
	 * redisTemplate配置
	 *
	 * @param factory
	 * @return
	 */
	@SuppressWarnings({ "rawtypes", "unchecked" })
	@Bean
	public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory) {
		StringRedisTemplate template = new StringRedisTemplate(factory);
		Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(
				Object.class);
		ObjectMapper om = new ObjectMapper();
		om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
		om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
		jackson2JsonRedisSerializer.setObjectMapper(om);
		template.setValueSerializer(jackson2JsonRedisSerializer);
		template.afterPropertiesSet();
		return template;
	}
	

}
